129258189 has 12 divisors (see below), whose sum is σ = 192729472. Its totient is φ = 83392200.

The previous prime is 129258179. The next prime is 129258271. The reversal of 129258189 is 981852921.

It is not a de Polignac number, because 129258189 - 2⁷ = 129258061 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129258139) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231367 + ... + 231924.

Almost surely, 2^129258189 is an apocalyptic number.

It is an amenable number.

129258189 is a deficient number, since it is larger than the sum of its proper divisors (63471283).

129258189 is a wasteful number, since it uses less digits than its factorization.

129258189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463328 (or 463325 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 129258189 is about 11369.1771470058. The cubic root of 129258189 is about 505.6143084602.

The spelling of 129258189 in words is "one hundred twenty-nine million, two hundred fifty-eight thousand, one hundred eighty-nine".